Schlumberger (SLB 0.26%) warned of impacts to its 4Q results that will weaken EPS by $0.05-$0.07, the company wrote in an "operational update" released today. In the tersely-worded statement, the company said that earnings will be affected by several negative developments in key markets.

These include sustained contractual delays in combination with higher-than-typical seasonal activity slowdowns in the firm's Europe/CIS/Africa region. Additionally, Schlumberger said that activity in North America "is weaker than anticipated on land in the US and Western Canada."

The company did not elaborate on either factor.

Schlumberger is to discuss its 4Q results in much greater detail in a conference call on January 18.